Nut-lock.



. PATLNTLD JULY 17, 1906. J. L. MCSPADDLN, H. L WILKIE L W. H. LEWIS.

NUT LOCK.

APPLICATION FILED sEPT;14,1905. 1

IIS

narran' smilies PATENT yirritiert '.o'nirrL. [Me/Sriniiiin, HENRY L. winnie-Airb wiLLniM H. Lewis, or Barona, niemeer.

Nur-Loon.,

Speeiiication of Letters Pate-ii Patentes July ir. ieee. .p

To LIZ whom: it may concern:

Be it known that we, JOHN L. MCSPADDEN,

HENRY L. WILKIE, wand WILLIAM H. Lnwis, citizens of the vUnited States, residing at Detour, in tiro county of Chi pew'a and State of Michigan, have invente certain new and useful improvements .in Nut-Locks; and we do hereb declare the following to be a full, clear, an exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the saine. Qur invention relates to nut-locks; and its object is to provide a device of this character aving means whereby either'- or both thc head and nut of the boltean belocked against rotation, thereby rendering the lock particularly adapted for useupon iish-plates.v

The invention consists of a nut having a series of teeth formed upon its inner face adapted to engage a lip which is struck from aA s ring-washer inserted between` the nut an the surface against which it is to be screwed. This washer also has means for engaging said surface so that it will not rotate with the nut. Another washer is interposed between the head of the bolt and the surface adjacent thereto, and this washer valso has a tongue or lip for projecting into a recess within the head.

The invention also consists of certain other novel lfeatures of construction and combination of parts which will bevhereinafter more fully claim.

. lshown the referred forni of our invention.

described, and `pointed out in the ln the accompanying drawings we have In. said rawings, Figure 1 is a perspective view of a ortion of a rail and fish-plates thereon, said plates being held b a bolt pro vided with our improved lock. ig. 2 is a section through the rail and iishlates, showing the bolt in position therein. ig. 3 is an elevation ofthe inner face of the nut. Fig. 4 is anedge'view of the nut. spective view of the washer used in connection with the nut. Fig. 6 is a perspective view of the head of the bolt, and Fig. 7 is a similar view-of the washer adapted to engage said head.

Referring to the figures by numeralsof refhaving a head 2, in the i11- ner face of which is formed a recess 3. 4A nut '4 is mounted on the bolt and has angular recesses 5 in its. inner face which forml ratchetteeth in using the bolt and nut herein described upon one Fig. 5 is a pei:-l

scribed We employ washers such as shown in Figs. 5 and 7. The washer 7, which is shown in Fi 6, is ring-like in form and has a lug 8,

struc: or otherwise formed upon one face thereof, and a slit 9 is cut into the washer from its periphery, so as to forni a 5"10, which projects ata slight angle iroin the "body of the washer.

. The washer 1i (shown in Fig.. 7) is also provided with a. lug l2,wliicliis similar to the lug but this washer has two` slits i3 cut thereinto from its periphery,

said slits being parallel and 'clamping a tongue or lip 14 of a width equal to the width of recess 3 in the bolt-head.

llvhen it is desired to lock the bolt and lnut to anobject, the bolt is iirst placed within the washer l1 yand the tongue or lip M is pressed backward at an angle so as so rest within the recess 3. forced into the surface of the object engaged by the bolt, as shown in Fig. 2. Washer 7 is then placed on the boltat the other side of the object and lug ment with the object. screwed upon the bolt and its ratchet-teeth 6 will slip over the lip l0. A reverse movement of the nut is, however, prevented by said lip. By this arrangement it will be noticed that the bolt, as well as the nut, is held against rotation, and therefore a secure lock is provided, and it is im ossible for the bolt to be? come accidentally etached. erably employ the two washers herein dee,

bolt,` we can, if desired, use either of them only.

it will be noticed that the recesses 5 do notv extend to the bolt-hole within. the nut, but instead a continuous unbroked portion sur The lug 13 is then S isforced into engagei The nut is .their f rounds said bolt-hole between it and the retherefore, out into and injure said. object@v Moreoveig by providing this arrangement of recesses it is unnecessary to cutV the slit 9 from the periphery'of the washer 7 into the bolthole, but instead said slit need only be of a length equaltothe distance between t e ends of the recessesl.

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is-

The combination with a bolt having a head 'and abeveled portion forming a recess in one K face of the head said recess starting near the bolt-'bedy and flush with .the feoeof said names te this specification in the presence of 1o head amd gradually deepening to tsupper I two subscribing witnesses.

A end; of a Washer upon the bolt, a lug struck A JOHN L. MCSPADDE-N;

therefrom and adapted to engage a-hebjeet I 1 T Cntaining the bolt, and en inclined lip exj tending from the washer and into the recess J 4 in the head, said lip formed by parallel slits Witnesses: V exteding into the Washer from its periphery. CHARL'ES MCLEAN,

In testimony whereof we have signed our l OT'Is WILKIE. 

